package com.ruoyi.common.security.utils;

import javax.servlet.http.HttpServletRequest;

import cn.hutool.crypto.asymmetric.KeyType;
import cn.hutool.crypto.asymmetric.RSA;
import cn.hutool.http.useragent.UserAgent;
import cn.hutool.http.useragent.UserAgentUtil;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import com.ruoyi.common.core.constant.SecurityConstants;
import com.ruoyi.common.core.constant.TokenConstants;
import com.ruoyi.common.core.context.SecurityContextHolder;
import com.ruoyi.common.core.utils.ServletUtils;
import com.ruoyi.common.core.utils.StringUtils;
import com.ruoyi.system.api.model.LoginUser;

/**
 * 权限获取工具类
 * 
 * @author ruoyi
 */
public class SecurityUtils
{
    /**
     * 获取用户ID
     */
    public static Long getUserId()
    {
        return SecurityContextHolder.getUserId();
    }

    /**
     * 获取用户名称
     */
    public static String getUsername()
    {
        return SecurityContextHolder.getUserName();
    }

    /**
     * 获取用户key
     */
    public static String getUserKey()
    {
        return SecurityContextHolder.getUserKey();
    }

    /**
     * 获取登录用户信息
     */
    public static LoginUser getLoginUser()
    {
        return SecurityContextHolder.get(SecurityConstants.LOGIN_USER, LoginUser.class);
    }

    /**
     * 获取请求token
     */
    public static String getToken()
    {
        return getToken(ServletUtils.getRequest());
    }

    /**
     * 根据request获取请求token
     */
    public static String getToken(HttpServletRequest request)
    {
        // 从header获取token标识
        String token = request.getHeader(TokenConstants.AUTHENTICATION);
        return replaceTokenPrefix(token);
    }

    /**
     * 裁剪token前缀
     */
    public static String replaceTokenPrefix(String token)
    {
        // 如果前端设置了令牌前缀，则裁剪掉前缀
        if (StringUtils.isNotEmpty(token) && token.startsWith(TokenConstants.PREFIX))
        {
            token = token.replaceFirst(TokenConstants.PREFIX, "");
        }
        return token;
    }

    /**
     * 是否为管理员
     * 
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId)
    {
        return userId != null && 1L == userId;
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword 真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 应放在nacos里面热更新
     */
    private static String publicKey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC06q6f72DKB2CjBZi3mE4jJWjcBJ1mLSmhDp7jhP1b/DIuW9rhmog1LPLWYt" +
            "GHafku4pjpKFWMEjFweQ5zIQGYpXj8sgEB8j4DXj8clbrhIRwhiGldZB2XzboMIgXPWr7kl/cjj2o1jB8SfsupIX5MDyYRssA6CUJ6/a8Z0R0R5wIDAQAB";

    private static String privateKey = "MIICdQIBADANBgkqhkiG9w0BAQEFAASCAl8wggJbAgEAAoGBALTqrp/vYMoHYKMFmLeYTiMlaNwEnWYtKaEOnuOE/Vv8Mi5b2uGaiDUs8t" +
            "Zi0Ydp+S7imOkoVYwSMXB5DnMhAZilePyyAQHyPgNePxyVuuEhHCGIaV1kHZfNugwiBc9avuSX9yOPajWMHxJ+y6khfkwPJhGywDoJQnr9rxnRHRHnAg" +
            "MBAAECgYAdjYZ3/sDnT5w0FRp0xy7gY+CErEZP5gm6UuqWjOdcKs7BruSK3NTqJs0GQz8p6SA4zfAfiiSrTF+" +
            "CGWxIVzhswemvP10EczFi2ul9CMMA8CADTPq60Vq3CFeH0Vv76nnbktuf6Jxux55sHBUQnlo6Fjs74/qEwjf3E67yhVQ0qQJBAOsMBX9q" +
            "Nch/zSFQ8RE4402UPFvmJtb4Xvi/RXjb+SsXOQJg/mzu8Mqq2qiZ6okGrgYDfGzPYD7bfYy66OjidIkCQQDFC1xxoRKU5py" +
            "UCXfILjUugkDnc4TjXNuwjwU+XGr8Qm8B95iLfK6a5seQuRlSwLVsbQh7DbteIZBMi7wDmpbvAkB/lALX6dpPfa7lyn1Oj8Ywsakha" +
            "IbkX+OMuKUIuL1B+lTjSapPjlH8b0hIA2MeBRYoBXRfyx++fnxjCoCpB2GhAkBoraBuvSMh92E3Q9BeiC24h3nze2sdXjdXlKM0feR" +
            "YHvLaGK7xa0tW/0MFn0/Upou7DjFzLdhcKXh/MbywLXABAkBWI/Iul67YKfg5yIuKvFXOS/prqXCKjqVYTiwUEuU7P1xflMfmJUvuAE3XlvOQgdJ" +
            "Nx7zzWVrLXUyl4ss76lmp";

    /**
     * 解密
     * @param encrypt
     * @return
     */
    public static String decryptStr(String encrypt) {
        RSA rsa = new RSA(privateKey, publicKey);
        byte[] decrypt = rsa.decrypt(new String(encrypt), KeyType.PrivateKey);
        return new String(decrypt);
    }
}
